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rated 0 times [  4] [ 0]  / answers: 1 / hits: 1739  / 10 Months ago, sun, may 14, 2023, 1:17:14

I am running Ubuntu 13.10, and I manage to suspend to RAM without any incidents. Suspending to disk (hibernate), however, does not work the second time I do it (after a reboot).



I tried to hibernate with pm-hibernate and also with uswusp.



The first time after a re-boot it goes fine, but if I try to hibernate again, it will hung with the message s2disk snapshooting system and I'll have to re-boot.



My swap partition is bigger than my RAM.



My /etc/default/grub:



GRUB_DEFAULT="5"
GRUB_HIDDEN_TIMEOUT_QUIET="true"
GRUB_TIMEOUT="10"
GRUB_DISTRIBUTOR="`lsb_release -i -s 2> /dev/null || echo Debian`"
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX="resume=UUID=6a6e6406-4022-4620-bb36-fbf29f5c1cdf"
GRUB_SAVEDEFAULT="false"


I run update-grub after changing the CMDLINE_LINUX parameter.



My /etc/initramfs-tools/conf.d/resume:



RESUME=UUID=6a6e6406-4022-4620-bb36-fbf29f5c1cdf


Updated it after changing it with:



sudo update-initramfs -u


I tried 're-setting' my swap with:



sudo swapoff -a && sudo swapon -U 6a6e6406-4022-4620-bb36-fbf29f5c1cdf


but it didn't change anything.



Output of free -m:



               total       used       free     shared    buffers     cached 
Mem: 1865 644 1220 0 111 328
-/+ buffers/cache: 205 1659
Swap: 2044 0 2044


Output of name -a:



Linux QuoraF 3.11.0-13-generic #20-Ubuntu SMP Wed Oct 23 07:38:26 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux


Is there any way to maybe re-set what's wrong after the first hibernation? I imagine that the system creates something somewhere, and this something blocks subsequent hibernations.


More From » hibernate

 Answers
6

Found a solution. Running:



sync && sudo sysctl -w vm.drop_caches=3 && sudo sysctl -w vm.drop_caches=2


would clean the cache, and the system will be able to hibernate a second time after a re-boot.



I don't now what or why something was accumulating in memory. It should be a stack system, where new entries drag out entries not needed anymore.



Wilf's tips are still valid for a system using the swap space when running. I am using it only for hibernating That means, I had 2 GB, but were only using 1 GB. Had I a need of 3 GB for example, I wouldn't be able to hibernate my 2GB RAM computer using a 2GB swap partition.


[#27035] Tuesday, May 16, 2023, 10 Months  [reply] [flag answer]
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ncharm

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